Bump behat/behat from 3.13.0 to 3.14.0 (#453)

* Bump behat/behat from 3.13.0 to 3.14.0

Bumps [behat/behat](https://github.com/Behat/Behat) from 3.13.0 to 3.14.0.
- [Release notes](https://github.com/Behat/Behat/releases)
- [Changelog](https://github.com/Behat/Behat/blob/master/CHANGELOG.md)
- [Commits](Behat/Behat@v3.13.0...v3.14.0)

---
updated-dependencies:
- dependency-name: behat/behat
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

* Upgrade yoast/phpunit-polyfills to 1.1.0

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Phil Tyler <[email protected]>